BackgroundSeveral studies have reported a significant reduction in non‐communicable diseases during adulthood by adopting a dietary regiment that is rich in dietary antioxidants.ObjectiveThe present study was conducted to assess the nutritional and biochemical status of vitamin C in healthy adults, and to measure their oxidative stress indices.Subjects and MethodsA cross‐sectional study included 200 healthy subjects (100 males and 100 females) were recruited for this study. The vitamin C intake was assessed by analyzing the study subjects' intake of antioxidants‐rich foods using a semi‐quantitative food frequency questionnaire. The serum levels of vitamin C and glutathione were determined using biochemical assay kits.ResultsThe male group had significantly higher intake of vitamin C as compared to the female group (P <0.05). Vitamin C and glutathione levels were higher in the sera of the male study subjects as compared to female group (P <0.05).ConclusionsThe daily intake of vitamin C of the male subjects was positively correlated to their serum levels of vitamin C and glutathione, indicating a potential improvement in the cellular redox status. This is consistent with previously published studies reporting a significant reduction in oxidative stress in relation to high status of vitamin C.